5. One of eddies friends accidentally knocks the heavy book onto the floor it falls to the floor and makes a loud noise what do we know about the energy in this example there is no change in the form of energy energy is destroyed when the book makes a loud sound energy is created when the book is dropped energy is changed from one Form to another

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explanation:

because it is

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.